| Autor: |
Shi, Kaixi, Li, Jinhua, Xiao, Youcheng, Guo, Liang, Chu, Xueying, Zhai, Yingjiao, Zhang, Beilong, Lu, Dongxiao, Rosei, Federico |
| Zdroj: |
ACS Applied Materials & Interfaces; July 2020, Vol. 12 Issue: 28 p31382-31391, 10p |
| Abstrakt: |
Various hybrid zero-dimensional/two-dimensional (0D/2D) systems have been developed to fabricate phototransistors with better performance compared to two-dimensional (2D) layered materials as well as broaden potential applications. Herein, we integrated environment-friendly InP@ZnS core–shell QDs with high efficiency of light absorption and light-emitting properties with bilayer MoS2for the realization of 0D/2D mixed-dimensional phototransistors. Interdigitated (IDT) electrodes with Pt-patterned arrays, acting as light collectors as well as plasmonic resonators, can further enhance light harvesting from the InP@ZnS-MoS2hybrid phototransistors, contributing to achieving a photoresponsivity as high as 1374 A·W–1. Moreover, thanks to the asymmetric Pt/MoS2Schottky junction at the source/drain contact, a self-powered characteristic with an ultrafast speed of 21.5 μs was achieved, which is among the best performances for 2D layered material-based phototransistors. In terms of these features, we demonstrated the artificial synapse network with short-time plasticity based on the self-powered photodetection device. Our work reveals the great potential of 0D/2D hybrid phototransistors for high-response, ultrafast-speed, and self-powered photodetectors coupled with artificial neuromorphic function. |
| Databáze: |
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